Heater for motor vehicles



July 3, 1928;

J. H GOULD HEATER FOR VMO'IOR vEBIcLEs Filed Jan. 31, .1927 z'smts-sneez l Patented July 3, 1928.

UNITED STATES PATENT QFFICE.

JOHN H. GOULD,

OF DETROIT, MICHIGAN, ASSIGNOR TO MGCGRID RADIATOR & MFG. 60., OF DETROIT, MICHIGAN, A CORPORATION OF MAINE.

HEATER FOE MOTQR VEHICLES.

Application filed January 31, 1927. Serial No. 164,6?38.

This invention relates to heaters for motor vehicles and more particularly hot air heaters;

@ne object of my invention is to increase a the amounts of heated air supplied to the body of the car or vehicle by mixing the air first heated by the exhaust gases from the explosion engine of the vehicle with air -drawn into the mixing chamber from the body of the Vehicle, and thus provide a more efficient heater.

Another object of my invention is to have the air intake of this mixing charnher at the floor of the car so as to take in the cooler airwhich tends to lie along the floor and thus insure heating the car body from top to bottom.

A further object at my invention is to provide dampers wherehy the heater may he completely shut ofi when not wanted or be partially closed so to regulate the amounts of heated air which may be supplied to the car hodyu A still further object of my invention is to provide'the blower which is used to force airthrough theh'eater assembly and into the bld y'l ot-the car after being'heated in cornhin with the fan of the radiator so that maybe driven by the engine through a V I "equivalent element which is common' between them.

The invention consists further in the that tars hereinafter described and claimed.

re the accompanying drawings----- Fig'. 1 is a view showing a heater asse bly of my invention applied to a motor car;

Fig. 2 is an enlarged vertical longitudinal sectional view through the portion '05. the heater assembly at the floor of the car;

Fig. 3 is vertical sectional view through the blower, taken on line 33 of Fig 1;

Fig. 4: is a similar sectional view hrougl the blower, taken on line of Fig. 3

and

Figs. 5 and 6 views of details of structure as embodied in the blower mechanism. The heater assembly of my invention is employed in combination with the explosion engine 1 of the motor vehicle and its exhaust pipe 2, which leads toward the rear of t car under the floor 3 thereof and discharges into a muflier i, as in motor car design Arranged in front of the engine 1 is the we p La we vey-ing pipe or cond usual radiator 5 forming a part of the coolmg system for the engine and having a fan 6 1n the rear of same to draw air through the radiator as in cooling systems of this general character. The fan 6 is driven from the errg ne l hy a belt 7 which runs over polls" tired to the huh of the fan, as C3 h1g5. l and Associated with the 6 is an air blow 9, which as shown the drawings i of centrifugal type havi' sui able air 1 10 about the axis of t e fan an air on let or discharge l1 ntial to the r or blower element 12 0.- .Jlli-l structure, a I devices of this enerai nature. (See 3.)

. 3 0 0 Connected to the drsch rge 11 1S an air F 1 .1 wlncn extends tor through the exhaust pipe 2, so that the hot exhaust passing through said pipe will raise the temperature of the 's ction. of he conduit 13 therein and thus heat the air creed throush said conduit hy the a Located below the door 3 of the car to th rear of the engine -1 is hollow casins which may he a "star in form. Secure the front end of this casing is elho fitting 15 having an upwardly extend bular section 1th which extends through the floor 3 jne car and c cowl 1'? over its end, as clearly in Fig. 2. T i is spaced above the greater portion (.lnreter to me opening provides; hthe cowl Another elbow-like the of the casing wardly extending '4 ing upward t Trough the floor 3 or r: as shown in 2a A. pertorated regl cap20 is fitted over end oi 'which may extend up into t e car b0 section 19 and through which heated air is supplied to the body of the car for warming purposes.

The casing 14 provides a mixing chamber for the cold air drawn into the same through the air intake 16 and the heated air supplied through the medium of the blower 9. TlllS furnishes a larger volume of heated am for the interior of the car-body than could be obtained should the heated air furnished through the conduit 13 be discharged d1- rectly into the car body. Thus the mterlor of the car is kept warmer and the occupants maintained comfortable even in .very cold weather. In forcing heated air into the car body in accordance with my invention, a circulation of air within the car body is maintained and thus the air prevented from stratifying with the warmer air above and the colder air below to produce discomfort, as permitted with heaters as heretofore most generally used. Moreover, in creatlng th1s circulation of air in the car body, the colder portions of the air are caused to flow into the cold air intake16-with much more freedom than would be produced by the ejector.

action .alone at the discharge end of the' conduit 13. The result is that my improved heater assembly is much more eflicient than the exhaust heaters heretofore used, and sufficient volumes of heated air are supplied to the interior of the car to warm it from top to bottom and make for reater comfort, especially in cold weather w en a heater 1s most needed and appreciated.

To shut off the cold air return 16, I provide a damper plate 21 therein. This plate is pivoted within the section 16 and may be swung into positions fully openin or closing the same, or into any interme late position, depending on the amounts of heated air the occupants of the car may require.

The axis member of this plate is provided with a handle 22 on the outside of the fitting 15 so that an actuating rod or member 23 may be connected therewith for adjusting the plate. The rod 23 may be provided with a suitable actuating member not shown), 3

through the floor 3 for ready accessibilit The fitting 18 is provided with an outlet opening 24 disposed in line with the casing 14, as shown in Fig. 2. Pivoted in the fitting 18 is a damper plate 25 arranged to be swung into a position either closing the opening 24 or closing the tubular extension 19 from below. When the plate 25 closes" the opening 24, the full amount of the heated air mixed in the casing 14 is allowed to be discharged into the body of the car through the register cap 20, as shown in full lines in Fig.2. On the other hand, when the plate 25 is swung upward to close the lower end of the extension 19, all of the heated air supplied by the casing 14 is discharged out through the opening 24 to the under side of the floor 3' of the car so as to furnish no heat therefor. The plate 25 is swung into this position When it is desired to cut off the supply of heat for the car, as would be the case in the summer and other warmer Weather. For swinging the plate 25, I provide an arm 26.. This arm is secured to the axis member of the plateand is outside of the fitting Where it is connected by a link 27 with the arm 22 of the damper 21 so that both dampers may be moved simultaneously through the action of the one rod 23. By adjusting the damper between fully closed and fully open positions, the amount of heated air supplied to the car may be regulated.

The blower 9 is detailed in Figs. 3 and 4. As there illustrated, the blower has a two-part casing 28 surrounding the rotor 12, which is provided with a 'mnltiplicity of vanes or buckets 29 extending laterally outward from one side of the annular body of the rotor, as shown in Fi 4. The portion of the casing 28 on the side of the rotor 12 having the body member is closed, while the opposite side of the casing is provided with the air intake 10, which is located just below the vanes or buckets29, as shown in Fig. 4. The body portion of the rotor extends outward through the intake 10 and has thepulley 8 formed integral therewith outside of the casing. The casting which makes this .part extends on to the hub of the fan 6 so that both the fan and the rotor of the blower may be operated through the medium of the pulle 8, which is common to both-of them. T e fan 6 is fixed to the outer end of a shaft 30, which extends axially through the pulley 8 and is supported by an annular portion 31 which is made integral with the casing 28 and extends inside of the pulley 8, as shown in Fig. 4. The front end of this member 31 extends to the shaft 30 on the innerside of the hub of the fan and there provides a bearing for the shaft. The portion 31 about the inner end of the shaft 30 is much larger than the diameter of the shaft and there has an annular member 32 pressed tightly in the same. This member carries a sleeve 33, which fits about the shaft 30 and provides a relatively long bearing therefor. A plate 34 is secured to the inner end of the shaft by a screw bolt, as shown, and holds the member 32 from working off the shaft. A plate 35 is clamped over the rear end of the casing 28 and has a rearwardly projecting stud or lug 36 by means of which the entire blower and fan assembly may be mounted on the engine block or other suitable sup port as may be provided therefor. The annular part 31 in conjunction with the closure plate 35 provides a lubricant containing chamber for the shaft 30. A spiral oil groove 37 (detailed in Fig. 5) is provided e This has an oil return passage 39 in tlilower portion of the member 32 so as to feed lubricant to the groove 37.

The air conveying pipe 18, just after leav ing the blower 9 and before entering the exhaust pipe 2, has a by-pass valve fitting til through the means of which air from the blower may be supplied to the carbureter P The details of structure shown and described may be variously changed and modi-' fied without departing from the spirit and cope of my invention.

1 claim as my invention:

1, A combined tan and centrifugal blower assembly of the character described, comprising a blower casing, a rotor in said cas ing and having vanes with the air intake of the casing arranged concentric with said vanes and the air discharge of the casing being tangential to said vanes, said rotor having an integral portion extending outward therefrom through said air intake,

ie ve and again enters the lubricant chain-- this gith da of anuar a fan connected with said integral portion and a driving oulleyon said portion between the blower and the tan.

2., A combined tan and a blower assembly oi the character described comprising a shaft, a blower casing surrounding said shaft and having an air intake and an air discharge, a fan to one side of said casing, a rotor in said casing and connected with said fan so that the two may be driven together and an annular member fitted said casing having an elongated sleeve for support ing said 3. A and blower assembly of the clan taseribed, cor shaft, a answer surrou. shaft h ing intake and an air discharge, a to ene side of easing, a rotor in said casing and connected said fan so that two may be driven to ether, an annular member fitted in said casing and having elongated sleeve for supporting said shaft a plate secured to one end oi the and extending over the said annular member said plate and sleeve havspiral lubricant carrying grooves therein with a lubricant return operig in said annular member.

in testimony whereof I signature 

